PESÀÇ ±â°èÀû ¼ºÁú[Mechanical Properties of PES] |
Àå±âÀû º¯Çü[Long Term Deformation] |
Creep |
½Ç¿ë ºÎÇ°ÀÇ °µµ °è»ê¿¡ ÀÖ¾î¼, Ç¥ÁØ Å×½ºÆ®(¿¹¸¦ µé¸éASTM)¿¡ ÀÇÇÑ °µµ,ź¼º·ü¸¸À» »ç¿ëÇÏ´Â °ÍÀº ÀûÀýÄ¡ ¾Ê½À´Ï´Ù.
ÃÖÀû µðÀÚÀÎÀ» °áÁ¤Çϴµ¥ À־Â, Å©¸®ÇÁ Ư¼º°ú ¿Âµµ¿¡ ÀÇÇÑ Æ¯¼º º¯È¸¦ ¹ÙÅÁÀ¸·Î, »ç¿ë Á¶°ÇÇÏ¿¡¼ÀÇ ¼ºÇüÇ°ÀÇ Ä¡¼ö º¯È ¹× °µµ º¯È¸¦ °í·ÁÇÒ ÇÊ¿ä°¡ ÀÖ½À´Ï´Ù. ±×¸²1¿¡ ³»Ãò·² ±×·¹À̵å4800GÀÇ 20 ¡É ¹× 150 ¡É¿¡ ÀÖ¾î¼ÀÇ ÀÎÀåÅ©¸®ÇÁƯ¼ºÀ» ³ªÅ¸³À´Ï´Ù. ±×¸²À¸·ÎºÎÅÍ ºÐ¸íÇÑ °ÍÀº PES´Â ³» Å©¸®ÇÁ¼ºÀÌ ¶Ù¾î³³´Ï´Ù. ³»Ãò·² ±×·¹À̵忡¼´Â 20 ¡É À¸·Î 20MPaÀÇ ºÎÇÏ·Î 3³â ÈÄÀÇ Å©¸®ÇÁ º¯ÇüÀÌ ºÒ°ú 1% À̸ç, 150 ¡É ¿¡¼ 10MPaÀÇ ºÎÇÏ¿¡¼µµ 3³â ÈÄÀÇ Å©¸®ÇÁ º¯ÇüÀÌ1%¿¡ Áö³ªÁö ¾Ê½À´Ï´Ù. |
Figure 1 Natural PESÀÇ ÀÎÀå Å©¸®ÇÁ Ư¼º(4800G) |
±×¸²2¿¡ À¯¸®¼¶À¯°È ±×·¹À̵å(3601GL30,4101GL30)ÀÇ150 ¡É¿¡ ÀÖ¾î¼ÀÇ ±¼°î Å©¸®ÇÁ Ư¼ºÀ» ³ªÅ¸³À´Ï´Ù.
°áÁ¤¼ºÀÇ PPS(À¯¸® ¼¶À¯ 40%°È ±×·¹À̵å)¿¡ ºñÇØ, PES´Â ¶Ù¾î³ Å©¸®ÇÁ Ư¼ºÀ» °¡Áö°í ÀÖ´Â °ÍÀ» ¾Ë ¼ö ÀÖ½À´Ï´Ù. |
Figure 2 À¯¸®¼¶À¯°È PES (3601GL30,4101GL30)ÀÇ ±¼°îÅ©¸®ÇÁƯ¼º |
Ãæ°Ý°µµ |
PES´Â °ÀÎÇÑ ¼öÁöÀ̸ç , ¶Ù¾î³ ³»Ãæ°Ý¼ºÀ» °¡Áö°í ÀÖ½À´Ï´Ù.
±×¸²3¿¡ IZODÃæ°Ý°µµ¿¡ ´ëÇØ ´Ù¸¥ ³»¿ ¼öÁö¿Í ºñ±³ÇÑ °ÍÀ» ³ªÅ¸³À´Ï´Ù¸¸, Not notch ³»Ãò·² ±×·¹À̵忡¼´Â Æı«ÇÏÁö ¾Ê´Â °ÍÀ» ¾Ë ¼ö ÀÖ½À´Ï´Ù. ºÎÇ° ¼³°è½Ã, ¿¹°¢ ºÎºÐÀ̳ª ¿¹°¢ÀÎ ³ª»çÀý¸¦ °¡´ÉÇÑ ÇÑ ¸¸µéÁö ¾Ê´Â °ÍÀÌ Áß¿äÇÕ´Ï´Ù. ±×¸®°í, sprue ³ª gate¸¦ ¿¹»Ú°Ô Àý´Ü Çϰųª ±ÝÇüÀÇ Ç¥¸éÀ» ¿¹»Ú°Ô ÇÏ´Â Àϵµ ÀÀ·Â ÁýÁßÀ» ¸·À¸¸ç PESº»·¡ÀÇ °µµ¸¦ ¹ßÈÖ ÇÒ ¼ö ÀÖ°Ô µË´Ï´Ù. |
Figure 3 ³»Ãæ°Ý¼º[Impact Resistance] |
Figure 4 Notch Tip Radius Dependence of Impact Strength at a Temperature of 20°C (PES4800G) |
±×¸²5¿¡ Ãæ°Ý °µµÀÇ ¿Âµµ ÀÇÁ¸¼ºÀ» ³ªÅ¸³À´Ï´Ù.
PES´Â 0 ¡É ÀÌÇÏÀÇ ¿Âµµ, ¿¹¸¦ µé¸é, £100 ¡É ¿¡¼µµ ÃæºÐÇÑ Ãæ°Ý °µµ¸¦ °¡Áö°í ÀÖ´Â °ÍÀ» ¾Ë ¼ö ÀÖ½À´Ï´Ù. |
Figure 5 Ãæ°Ý °µµÀÇ ¿Âµµ ÀÇÁ¸¼º(PES4800G)[Temperature Dependence of Impact Strength (PES4800G)] |
Weld Strength |
Weld Strength |
»çÃâ ¼ºÇüÀ» ÇÏ´Â °æ¿ì , À£µåºÎ(¼öÁöÀÇ ÇÕ·ùÁ¡) ´Â ºñÀ£µåºÎº¸´Ù °µµ°¡ ³·¾ÆÁý´Ï´Ù.
À¯¸®¼¶À¯°È ±×·¹À̵åÀÇ À£µåºÎÀÇ °µµ´Â À¯¸®¼¶À¯ÀÇ ÇÔÀ¯·®¿¡ ÀÇÇØ ÀúÇÏÇÕ´Ï´Ù. ±×¸²6¿¡´Â ºñÀ£µå °µµ¿Í À£µå °µµÀÇ ºñ±³¸¦, Ç¥1¿¡ PESÀÇ À£µåºÎÀÇ ÀÎÀå °µµ¸¦ ³ªÅ¸³À´Ï´Ù. |
Figure 6 À£µåºÎ¿Í ºñÀ£µåºÎÀÇ ±¼°î°µµ[Bend Strengths of Weld and Non-weld Areas] |
Table 1 À£µåºÎÀÇ ÀÎÀå °µµ[Tensile Strength of Weld Areas] |
(Unit : MPa) |
Grade | Non-Weld Areas | Weld Areas |
4100G 4800G |
84 84 |
81 82 |
3601GL20 4101GL20 4101GL30 |
124 124 140 |
67 68 61 |
PES´Â Ÿ¼öÁö¿Í ºñ±³ÇØ, À£µå °µµ°¡ ¸Å¿ì ³ôÀº °ÍÀ» ¾Ë ¼ö ÀÖ½À´Ï´Ù.
ƯÈ÷ ºñ°ÈÀÇ ³»Ãò·² ±×·¹À̵å´Â À£µåºÎÀÇ °µµ ÀúÇÏ°¡ °ÅÀÇ ¾ø°í, ºñÀ£µåºÎ¿Í µ¿µîÀÇ °µµ¸¦ °¡Áö°í ÀÖ½À´Ï´Ù. |
Weld Strength of 4100G |
Table 2 Weld Strength |
Resin | Bend Strength (MPa) |
Izod Impact Strength (J/m) | |||||
Without Notch | 0.25OR Notch | ||||||
Non-weld Area | Weld Area | Non-weld Area | Weld Area | Non-weld Area | Weld Area | ||
PES | 4100G | 140* | 140* | >1960* | 2156 | 68 | 49 |
4101GL20 | 190 | 110 | 411 | 117 | 68 | 29 | |
4104GL30 | 180 | 110 | 362 | 98 | 68 | 29 | |
PPS(GF40%) | 170 | 70 | 166 | 29 | 49 | 19 |
Figure Marked with * = did not rupture | |
Note 1) | |
Molding Machine : | Neomat N47 / 28, manufactured by Sumitomo Heavy Industries, Ltd. |
Injection Pressure : | 130MPa |
Injection Speed : | 60% |
Cylinder Temperature : | 340°C(4100G) 350°C(4101GL20·4104GL30) |
Injection Time : | 10 seconds |
Cooling Time : | 20 seconds |
Weld Strength of Thin-walled Moldings |
Figure 7 Relationship Between Wall Thicknesses of Moldings and Weld Area Tensile Strength |
À£µå °µµÀÇ °³¼±[Improvement of Weld Strength] |
À£µå¿¡ ÀÇÇÑ °µµ ÀúÇÏ°¡ ½Ç¿ë»ó ¹®Á¦°¡ µÇ´Â °æ¿ì¿¡´Â, ¾Æ·¡ ¹æ¹ý¿¡ µû¶ó °³¼± °¡´É¼ºÀÌ ÀÖ½À´Ï´Ù.
¡Ü¾î´Ò¸µ¿¡ ÀÇÇÑ °³¼± À¯¸® ¼¶À¯ °È ±×·¹À̵åÀÇ À£µåºÎ´Â, 150~180 ¡ÉÀÇ ¾î´Ò¸µ 󸮿¡ ÀÇÇØ 15~20% Çâ»óÇÕ´Ï´Ù. ÀûÀýÇÑ ¾î´Ò¸µ Á¶°ÇÀº 0.5mm~1.5mmtÀÇ µÎ²¨¿î ºÎºÐÀÇ °æ¿ì 150 ¡É¡¿20ºÐ, 2mmtÀÇ µÎ²¨¿î ºÎºÐÀÇ °æ¿ì 180 ¡É¡¿180ºÐ ÀÔ´Ï´Ù. |
Table 3 Improvement of Weld Tensile Strength in Glass Fiber Reinforced Grades Through Annealing |
(Units: MPa) |
Grade | Before Annealing | 150 °C | 180°C | |
20min | 20min | 180min | ||
3601GL20 4101GL20 |
68 | 76(113%) |
76(113%) |
77(114%) |
3601GL30 4101GL30 |
61 | 75(123%) |
75(121%) |
75(121%) |
¡Ü±ÝÇü ¿Âµµ¿¡ ÀÇÇÑ °³¼± À£µå °µµ´Â ¼ºÇü½ÃÀÇ ±ÝÇü ¿Âµµ´Â ³ôÀº °ÍÀÌ À¯¸®Çϱ⠶§¹®¿¡, ±ÝÇü ¿Âµµ¸¦160~180 ¡É·Î ³ô°Ô ÇÏ´Â °ÍÀ» °ËÅäÇØ ÁÖ¼¼¿ä. |